A Leticia agency whose pitch is the bespoke trip — their own WhatsApp prefill offers to "design a personalised journey", which is a different proposition from the standard four-day lodge package everybody else sells off the same jetty.
Useful if you want a particular thing: a specific community, a specific stretch of river, more days than the packages run to, or a boat that goes upstream rather than down.
No address and no email on the site. WhatsApp is the channel.